The ENGINE COOLING PULSATOR®is the Popular,Quick, Effective, Powerful, and Complete Engine Cooling System Flushing Tool Kit. No Chemicals Required. This tool produces a true high frequency kinetic energy pulse in the liquid flow; the pulse energy is capable of lifting & suspending (churning up) abrasive particulates, scrubbing the restrictive buildups from the internal surfaces, and carrying it all out in the pulse outflow. Pressure Energy is converted into Kinetic (velocity) energy; producing little risk of pressure damage.